net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch

At this moment the following is supported:
* Link state management through phylib
* Autonomous L2 forwarding managed through iproute2 bridge commands.

IP termination must be done currently through the master netdevice,
since the switch is unmanaged at this point and using
DSA_TAG_PROTO_NONE.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Georg Waibel <georg.waibel@sensor-technik.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 19 insertions, 0 deletions

diff --git a/include/linux/dsa/sja1105.h b/include/linux/dsa/sja1105.h
new file mode 100644
index 000000000000..30559d1d0e1b
--- /dev/null
+++ b/include/linux/dsa/sja1105.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0
+ * Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
+ */
+
+/* Included by drivers/net/dsa/sja1105/sja1105.h */
+
+#ifndef _NET_DSA_SJA1105_H
+#define _NET_DSA_SJA1105_H
+
+/* The switch can only be convinced to stay in unmanaged mode and not trap any
+ * link-local traffic by actually telling it to filter frames sent at the
+ * 00:00:00:00:00:00 destination MAC.
+ */
+#define SJA1105_LINKLOCAL_FILTER_A              0x000000000000ull
+#define SJA1105_LINKLOCAL_FILTER_A_MASK         0xFFFFFFFFFFFFull
+#define SJA1105_LINKLOCAL_FILTER_B              0x000000000000ull
+#define SJA1105_LINKLOCAL_FILTER_B_MASK         0xFFFFFFFFFFFFull
+
+#endif /* _NET_DSA_SJA1105_H */